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Engineering Department question

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ff316

05-07-2002 13:25:33




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This is for the JD history experts. I have a book that lists different models of tractors, along with thier specifications, serial #'s, etc... I think it is called the JD Tractor Data Book (sorry, i's at home right now) by Lorry Dunning? Anyways - it shows in a couple places where a group of tractors were sent to the engineering department. For example, it says the first 18 520's went to the ED. Now for my question - What did they do with them? Develop implements? Experiment with different configurations and special purposes? Endurance tests? Were they later sold back to the public, or kept by Deere, or scrapped, or? Thanks for taking the time to answer this, I'm just curious. Fireman

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Bob F.

05-08-2002 05:19:50




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 Re: Engineering Department question in reply to ff316, 05-07-2002 13:25:33  
I know that in at least one case one of these tractors was taken from engineering and sent out to an area dealer for sale. We have a 620 LP that my grandfather bought "New" from an area dealer that no longer exists. The SN is 6200014 and we were told that it came either from the engineering department or from the Experimental Farm. Apparently it had some hours on the tach when it was purchased but otherwise was like new.

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G Taylor

05-07-2002 13:57:14




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 Re: Engineering Department question in reply to ff316, 05-07-2002 13:25:33  
Some would be fitted into blackdash 520's & also used for 530 development. Some likely got attached to a dyno & ran 24/7 at 100% power until they dropped, for destructive yesting.



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Stan - Florida

05-07-2002 13:52:40




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 Re: Engineering Department question in reply to ff316, 05-07-2002 13:25:33  
Fireman,

Your guesses as to what happened to them are pretty close, I would think. In reading J.R. Hobbs' articles over the years, it seems that all the things you guessed happened at one time or another. The most common final dispositions seemed to be scapped, sold as used, or kept by Deere.

I can't get more specific as to the 520s - sorry.

Stan



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Brandon

05-07-2002 13:44:28




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 Re: Engineering Department question in reply to ff316, 05-07-2002 13:25:33  
I think you've got it pretty much figured out. Most of the "new" designs were tested a while. Tractors were also sent there for testing new parts or options, equipment, etc. Some tractors were sent there to make sure everything worked OK, before being tested at Nebraska.

After going through the department, I think most were sold as used equipment. Like you said, some could have been scrapped, or kept by Deere. Probably depends on how many modifications were made.

Brandon

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